'99 Suburban

[VegasJen]

Is this the right forum for the Suburban platform?   If not, can somebody point me in the right direction?

 

So here's my problem.  It's a 99 Suburban K-1500.  Any time I turn, the wheels chirp like my Ackerman angle is all wonky.  I've looked and the tie rods are a little loose, but nothing outrageous.  Wheel bearings are good.  Ball joints are good.  Even the A-arm bushings are in surprisingly good shape for 175k miles.  Truck drives straight down the road.  But any time I turn, especially a sharp turn, it's almost like the outside wheel tries to go straight and wants to pull the truck straight too.  I can't figure out what might cause this.  I'm not real familiar with 4WD but so far as I can tell, it's not engaged.  I don't have any kind of indicator light that tells me whether it is or not, but if I push the 4 low button, I do feel a "clunk" in the transmission.

 

Thoughts?

[Brian Lindsey]

i had a problem almost similar , when doing a slow speed turn it felt like front wanted to go straight, but no chirping , it was the tires , they were old and starting to dry rot, and side walls would roll when i turned , i have new tires now and that went away, hope this helps.

[OZRY83]

Sounds to me it is in auto 4X4 or 4 high. one way to  tell is jack up both axles, nothing touching ground and put in drive, if a front wheel is spinning its probably stuck in 4wd. Does the 99 have thermal actuator? Maybe someone bypassed actuator and put in one of those lock out pins, or did this just start happening?